Functional chloroacetylated polystyrene microsphere carriers(PS-acyl-Cl)were prepared via Friedel-Crafts acetylation.The structure and chlorine content of PS-acyl-Cl microsphere carriers was characterized by Fourier transform infrared spectrometer(FT-IR), element analysis and X-ray photoelectron spectrospcoy(XPS)and elemental analysis.The effects of the catalyst amount on the reaction were explored.Results showed that the reaction reached its maximum conversion rate when the reaction rate of weight gain was saturated at mole ratio of 1.5:1(catalyst:PS),and the-Cl loading of PS-acyl-Cl could be controlled in the range of 0-4.78 mmol/g by changing the amount of catalyst.The study of excess reagent and catalysts recycling showed that catalyst contained in the recovered solution could be directly reused,and the amount of fresh catalyst could be saved.For example,it could save about 40%-50% of fresh catalyst in the reaction of next time,if 1.5 mole of catalyst was firstly added.Meanwhile,the recycling of solvent could be achieved by reusing the recovered liquid,which could save more than 70% of the solvent dosage.Thus,an economic green and environmentally benign reaction process could be achieved.